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CAGE FATTENING RESULTS OF COMMON CARP (Cyprinus carpio) IN HYDROACCUMULATION GRABOVO NEAR VUKOVAR
Ivan Bogut
; Poljoprivredni fakultet Sveučilšta u Osijeku, Osijek, Hrvatska
Ružica Magovac
; Vupik dd, Vukovar, Hrvatska
Davor Sabo
; Vupik dd, Vukovar, Hrvatska
Dragutin Bodakoš
; Prehrambeno tehnološki fakultet Osijek, Hrvatska
Dalida Galović
; Poljoprivredni fakultet Sveučilšta u Osijeku, Osijek, Hrvatska
Marko Arežina
; Poljoprivredni fakultet Sveučilšta u Osijeku, Osijek, Hrvatska
Valentina Rajković
; Prehrambeno tehnološki fakultet Osijek, Hrvatska
Sažetak
This paper presents the first cage fattening results in the storage lake Grabovo. The lake is composed of the Upper and Lower Lake that covers an area of ca. 75 ha. A platform containing 16 cages is located in the Upper lake which was dug to the depth of 5 m for this purpose. Cages dimensions 5x5x2,5m were inoculated with 398 to 440 individuals of 2-year old carp fry of mean weight from 700 to 750 g•individuals-1 . During the experimental season some physico-mechanical properties were measured, like dissolved oxygen concentration, water temperature and pH value. Fish were fed
fodder pellets containing 32 % of raw proteins and 10 % of lipids. Pellets were 8 mm in diameter was. On the basis of the individual mean weight of carp fry, water temperature, dissolved oxygen concentration and other physico-mechanical properties daily food amount was prescribed in accordance with nutrition tables. Weight gain from 141.3 to 162.2 kg was established after 109 feeding days. Daily individual weight gain varied from 3.66 to 3.85 g•individuals-1. Specific growth rate (SGR) values were from 0.093 to 0.168 %•day-1. Nutritive coefficient after a 109 feeding days was 3.67 to 4.13, and mortality was 4 %.
Ključne riječi
cages; carp; weight gain; nutrient coefficient
Hrčak ID:
26794
URI
Datum izdavanja:
4.9.2007.
Posjeta: 4.653 *